CVE-2026-51536

OpENer 2.3.0 is affected by CVE-2026-51536 due to inconsistent typing of the length parameter across the call stack: an upstream int length is passed to a downstream function expecting a 16-bit signed EipInt16. A crafted CIP packet can cause the length to overflow or become negative, bypassing bo...

PT-2026-57911

Name of the Vulnerable Software and Affected Versions OpENer version 2.3.0 master branch up to commit 76b95cf Description A severe memory corruption issue exists due to an integer underflow during the processing of connected explicit messages within the SendUnitData function. An integer underflow...

CVE-2026-51537

EIPStackGroup OpENer 2.3.0 commit 76b95cf has an out-of-bounds read issue in Connection Manager handling of ForwardOpen requests when processing short malformed packets. An attacker can send a valid ENIP outer frame carrying a malformed CIP ForwardOpen/LargeForwardOpen request, causing the parser...

PT-2026-57876

Name of the Vulnerable Software and Affected Versions EIPStackGroup OpENer version 2.3.0 commit 76b95cf Description An out-of-bounds read occurs in the Connection Manager when handling ForwardOpen requests during the processing of short malformed packets. An unauthenticated remote attacker can...

CVE-2026-51538

CVE-2026-51538 (OpENer 2.3.0) describes an Incorrect Access Control in encapsulation session handling. The server validates that a session_handle exists in the global list but does not verify that the handle belongs to the TCP connection issuing the request. With no strong binding between a sessi...

CVE-2026-51540

OpENer 2.3.0 master branch up to commit 76b95cf is vulnerable to a severe memory corruption issue caused by an integer underflow in the processing of connected explicit messages SendUnitData...

PT-2026-57875

Name of the Vulnerable Software and Affected Versions OpENer version 2.3.0 Description An issue exists when parsing incoming Common Industrial Protocol CIP network packets where the length parameter is inconsistently typed across the call stack. An upstream length calculated as an int is passed t...

CVE-2026-51538

EIPStackGroup OpENer 2.3.0 commit 76b95cf suffers from an Incorrect Access Control vulnerability in its handling of encapsulation sessions. When the server processes critical encapsulation commands, it verifies whether the provided sessionhandle exists in the global session list, but it fails to...

PT-2026-57877

Name of the Vulnerable Software and Affected Versions EIPStackGroup OpENer version 2.3.0 commit 76b95cf Description Incorrect access control exists in the handling of encapsulation sessions. When the server processes critical encapsulation commands, it verifies if the session handle exists in the...

CVE-2026-51538

EIPStackGroup OpENer 2.3.0 commit 76b95cf suffers from an Incorrect Access Control vulnerability in its handling of encapsulation sessions. When the server processes critical encapsulation commands, it verifies whether the provided sessionhandle exists in the global session list, but it fails to...

CVE-2026-51537

EIPStackGroup OpENer 2.3.0 commit 76b95cf has an out-of-bounds read issue in Connection Manager handling of ForwardOpen requests when processing short malformed packets. An attacker can send a valid ENIP outer frame carrying a malformed CIP ForwardOpen/LargeForwardOpen request, causing the parser...

CVE-2026-51540

OpENer 2.3.0 (master up to commit 76b95cf) is affected by a severe memory corruption vulnerability due to an integer underflow in processing of connected explicit messages (SendUnitData). The CVE-2026-51540 entry lists a CVSS v3.1 base score of 9.8 (CRITICAL) with NETWORK attack vector, no privil...

CVE-2026-55659

Grist is spreadsheet software using Python as its formula language. Prior to 1.7.15, several server-rendered Grist pages embedded user-controlled values into the page and into inline scripts without fully escaping them, allowing cross-site scripting. On the main application page, a document's nam...

CVE-2026-55659 Grist: XSS through unsafe value interpolation in server-rendered pages

Grist is spreadsheet software using Python as its formula language. Prior to 1.7.15, several server-rendered Grist pages embedded user-controlled values into the page and into inline scripts without fully escaping them, allowing cross-site scripting. On the main application page, a document's nam...

EUVD-2026-42503

In OpENer 2.3.0 commit 76b95cf, a resource exhaustion Denial of Service vulnerability exists in its network processing loop...

CVE-2026-51535

In OpENer 2.3.0 commit 76b95cf, a resource exhaustion Denial of Service vulnerability exists in its network processing loop...

CVE-2026-51535

In OpENer 2.3.0 commit 76b95cf, a resource exhaustion Denial of Service vulnerability exists in its network processing loop...

CVE-2026-51535

CVE-2026-51535 affects OpENer 2.3.0 (commit 76b95cf). A resource exhaustion (Denial of Service) condition exists in the network processing loop. The vulnerability is described consistently across multiple sources (NVD, EUVD, CVE lists, and third-party feeds) as a DoS in the networking stack, but ...

PT-2026-56622

Name of the Vulnerable Software and Affected Versions OpENer version 2.3.0 Description A resource exhaustion issue exists in the network processing loop, which can lead to a Denial of Service DoS condition. Denial of Service is a state where a system becomes unavailable to its intended users...

EUVD-2026-40246

A buffer overflow in the GetAttributeList function of EIPStackGroup OpENer commit 76b95c allows attackers to cause a Denial of Service DoS via supplying a crafted Common Packet Format CPF packet...